Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.
-) Susan, an artist, plans to paint and sell some miniature paintings. She just bought some
brushes for $16, and paint and canvas for each painting costs $49; she will sell each painting
for $65. Once Susan sells a certain number of her paintings, she will be breaking even. How
much will Susan have earned? How many paintings will that be?
- Susan's expenses and receipts will both total $
when she has sold
of her
paintings.

Interpret the following expression (5y^2-7)^3/(2y)^2

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.

The investigating team suspected that there were differences in the cost of repairing cars in workshop i and workshop ii. the investigating team suspected that the costs raised by workshop i were greater than workshop ii. for that they tested the repair of 15 cars in each workshop to see the cost of repairs.the decision of the right hypothesis to prove the suspicion above is a. h0 : μ1- μ2­ = 0; ha : μ1- μ2­ ≠ 0 b. h0 : μ1- μ2 ≥ 0; ha : μ1- μ2 < 0 c. h0 : μd ≥ 0; ha : μd < 0 with μd = μ2- μ1 d. h0 : μd = 0; ha : μd ≠ 0 with μd = μ2- μ1 e. h0 : μ1- μ2 = 0; ha : μ1- μ2 ≥ 0