Which expression is equivalent to 30(1/2x-2)+40(3/4y-4)?
1.45xy-220
2.15x-30y-220
3.15x+30y-220
4.15x+30y-64

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2