Laura runs during her lunch break. The average speed SSS, in kilometers per hour, at which Laura runs depends on the temperature ttt, in degrees Celsius (^{\circ}\text{C})(
∘
C)left parenthesis, degrees, start text, C, end text, right parenthesis, at the start of her run and can be modeled by the function S(t)=6+0.2(25-t)S(t)=6+0.2(25−t)S, left parenthesis, t, right parenthesis, equals, 6, plus, 0, point, 2, left parenthesis, 25, minus, t, right parenthesis.
The distance, DDD, in kilometers, that she can run in 303030 minutes given that her average speed is xxx kilometers per hour can be modeled by the function D(x)=0.5xD(x)=0.5xD, left parenthesis, x, right parenthesis, equals, 0, point, 5, x.
Which expression models the distance that Laura runs in 303030 minutes given that it is t^\circ{\text{C}}t
∘
Ct, degrees, start text, C, end text outside at the start of her run?

Beatrice decides she wants to babysit a few children at the same time to earn the money faster. she tells parents that if they allow her to babysit their children at her house, she will eliminate her automatic $5 tip and will give them an additional $5 discount. (a) write an equation showing the total cost for each client. identify all variables. (b) four parents bring their children to beatrice’s house at the same time for babysitting. beatrice wants to find out how many hours she must babysit the 4 children to earn exactly the $100 she needs in order to buy the present for her mother. write and solve an equation to find the number of hours. justify each step in the solution. (c) one parent decides not to drop off her child. the remaining 3 parents drop their children off at 9 a.m. two of the parents say they will be back at 1 p.m. the third parent says she will pick up her child at 2 p.m. at noon, beatrice realizes she needs feeding the 3 ch

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

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