Suppose the linear regression line y+2.1x+130 predicts sales based on the money spent on advertising. if x represents the dollars spent in advertising, and y represents the company sales in dollars, about how much can the company expect in sales if it spends $150 in advertising?

Pls brainliest will be awarded if answer is correct

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a. p.

Someone answer this asap for gabriella uses the current exchange rate to write the function, h(x), where x is the number of u. s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a. gabriella averages 7.5 u. s. dollars for every 100 euros. b. gabriella averages 100 u. s. dollars for every 25 euros. c. gabriella can exchange 75 u. s. dollars for 100 euros. d. gabriella can exchange 100 u. s. dollars for 75 euros.