Ireally need with this problem. in exercises 38, you are given the cost c of producing x units the revenue r from selling x units, and the profit p. find the value of x that will produce the profit p. c=4000-40x+0.02x^2, r=x(50-0.01x),p=$63,500

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Asap! i'm not good math and i'm lost.