(i need i wanna go to sleep)the temperature dropped 1.8 *c each hour 4 1/2 hours starting from 8 p. m. if the temperature was 4.6*c at 8 p. m, what was the temperature at 12: 30 a. m?

One integer is 8 times another. if the product is 72, then find the integers

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.

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.