Tìm cực trị của hàm số : z = x²-4x+4y²-8y+3

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earn $75 in interest.how much interest will she earn during the following year?