Need in these 3 algebra questions 7. add: (3s2 + 7s + 2) + (5s2 + 9s – 1) a. 8s2 + 16s + 3 b. 8s4 + 16s + 1 c. 8s2 + 16s + 1 d. –2s2 – 2s + 1 8. (–3t2u3)(5t7u8) = a. –15t14u24 b. 2t9u11 c. –15t–5u–5 d. –15t9u11 11. the square of a number is equal to 6 more than the number. find all such numbers. a. –4; –3 b. –2 c. 3; –2 d. –3

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

What is the measure of one interior angle of a pentagon

1. an economy consists of three workers: larry, moe, and curly. each works 10 hours a day and can produce two services: mowing lawns and washing cars. in an hour, larry can either mow one lawn or wash one car; moe can either mow one lawn or wash two cars; and curly can either mow two lawns or wash one car. a. calculate how much of each service is produced under the following circumstances: a. all three spend all their time mowing lawns. b. all three spend all their time washing cars. c. all three spend half their time on each activity d. larry spends half of his time on each activity, while moe only washes cars and curly only mows lawns b. using your answers to part a, draw a production possibilities frontier and label points a, b, c, and d on your graph. explain why the production possibilities frontier has the shape it does. c. are any of the allocations calculated in part a inefficient? explain.