How many solutions does the system of equations have? x - 3y = 15 and 3x - 9y=45

how many solutions does the system of equations have? y - 6x = -3 and 4y - 24x = -16

Kevin is an insurance salesman. when he sells a policy, he makes 20 percent of the policy premium (p) up front; then each year the policy is active, he receives 15 percent of the original premium. which equation could be used to figure his total commission on a policy that has been active for five years? c=0.80p c=0.20p + 0.15p c=0.35p + 4(0.15) c=0.95p

How do i find the missing angle measure in a polygon

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?