Rebecca and Virginia are at the amusement park. Virginia brought $9.98 less than Rebecca did to the park. Virginia brought $31.57 to the park.

Which equation can be used to find how much money Rebecca brought to the amusement park, r?
A.

B.

C.

D.

$31.57+$9.98=r

Step-by-step explanation:

You can think inverse operation with this equation. $9.98 less mean subtract and the inverse of subtract is add. $31.57 is a "neutral" value because it does not have any key math words with it. Therefore, you would add $9.98 to $31.57 in order to get r.

10 you would take 50/ .2

step-by-step explanation:

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1