Determine the percent change between $7.50 and $9.00

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Which graph represents the same relation is the sa which graph represents the same relation as the set {(-3-2)}