In the expression 2(10x) + 15y, x represents the number of hours Nina works in a week at a clothing store and y represents the number of hours she works in a week as a babysitter. The expression shows how much money Nina has earned this month. Which statement is true? Nina has worked a total of x – y hours so far this month. Nina works 15 hours a week at the clothing store. Nina makes 20x dollars at the clothing store each week. Nina makes $10 per hour babysitting each week.

step-by-step explanation:

the answer is 89 d

i took the test

55.44 inches

step-by-step explanation:

part a. assuming a perfectly linear relationship, we can find the slope from the first two data points.

slope = m = (change in rainfall)/(change in years)

= (61.80 -62.33)/(2005 -2004) = -0.53/1 = -0.53

then the point-slope form of the equation of the line can be written as

y = m(x -h) +k . . . . . m = -0.53, (h, k) = (0, 62.33)

y = -0.53x +62.33 . . . x = years after 2004

part b. in 2017, x = 2017 -2004 = 13. then the predicted rainfall is

y = -0.53·13 +62.33 = 55.44 . . inches

the predicted rainfall in 2017 is 55.44 in.

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation:

step-by-step explanation: if she dances 25 minutes longer then runs she would have dance 25 more minutes of running and 30 minutes of dancing to add up to 55