Which expressions are quadratic expressions? Check all that apply. z^2
2x + 7x – 10
2x^2 + 9x – 7
500(0.25)^t – 1
13x^3 + 21x^2 – 5
There is more than one answer. Please answer fast. I will mark brainliest!

Explain how you can use the associative property to evaluate (7x50)x4.

Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)

Will mark the brainliest. paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?