Peter wants to put 2 coats of paint on both the inside and outside of the walls. there are 5 walls, each side having 45 ft2 of paintable surface. a gallon of paint covers x ft2. explain how to write an expression to represent the number of gallons of paint peter needs.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Marking brainliest rewrite the equation x = 65 - 60p by factoring the side that contains the variable p.

Astudy claims that the mean age of online dating service users is 40 years. some researchers think this is not accurate and want to show that the mean age is not 40 years. identify the null hypothesis, h0, and the alternative hypothesis, ha, in terms of the parameter μ. select the correct answer below: h0: μ≥40; ha: μ< 40 h0: μ≤40; ha: μ> 40 h0: μ≠40; ha: μ=40 h0: μ=40; ha: μ≠40