:edith babysits for x hours a week after school at a job that pays $4 an hour. she has accepted a job that pays $7 an hour as a library assistant
working y hours a week. she will work both jobs. she is able to work no more than 16 hours a week, due to school commitments. edith wants to earn at least $80 a week, working a combination of both jobs.
write an inequality to represent this, and solve for y
worth 22 point

W-16=-12 solve each one step equation plz

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

Simplify (8x2 − 1 + 2x3) − (7x3 − 3x2 + 1). −5x3 + 11x2 − 2 5x3 − 11x2 + 2 x3 + 2x2 + x3 x3 − 2x2 − x3