7. A small child came across a pile of pebbles while playing in a park. He decided to make a design by lining up the pebbles in rows. The first row
had 7 pebbles. Each row had 4 more pebbles than the previous row. If the
child made 15 rows, what is the total number of pebbles in the design?

Four equations are shown below.equation 1: y=2*equation 2: y=2x-5equation 3: y=x2 + 6equation 4: tdentify one linear equation and one nonlinear equation from the list.why each equation you identified is linear or nonlinear.nd one nonlinear equation from the list. state a reasonlinear equation