Find the percent of increase from 380 to 510. round to the nearest tenth of a percent if necessary. a. 74.5% b. 25.5% c. 34.2% d. 0.3%

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.