Assume that the profit generated by a product is given by P(x) = 57, where x is the number of units sold. If the profit keeps changing at a rate of $500 per month, then how fast are the sales changing when the number of units sold is 900? (Round
your answer to the nearest dollar per month.)

Fawn bought a total of 70 cakes for a tea party. she spent $3,025. fawn bought vanilla cakes for $22 each and a fruit filled cake for $55 each. the system of equations below can be used to find the number of vanilla cakes, v, and the number of fruit filled cakes, f, fawn purchased. which system of equations has the same solution as the system below.