Mary currently weighs 150 pounds. Before her diet she, weighed 180 pounds. What is the percent of change in her weight? Show your work. Round to the tenths place.

ok thats very interesting

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10

a) is $10.34

b) is 6 toppings