Deborah Miles bought 3 t-shirts for $7.50 each and a sweatshirt for $22.95. How much change did she receive from a $50 bill?

4.6 dollars

Step-by-step explanation:

Her Tshirt costs were 3 x 7.5 = 22.5$

Her total bill was (22.95) + 3(7.50) = 45.4$

She paid 50, so the change is the amount she paid minus the cost

50 - 45.4 = 4.6$

$4.55

Step-by-step explanation:

change she received=50-(7.50*3+22.95)

                                  =50-45.45

                                  =$4.55

answer: b.48 for

step-by-step explanation:

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.