At noon, the temperature was 75LaTeX: ^\circ∘F. After cold front came through, by midnight the temperature dropped to 45LaTeX: ^\circ∘F. What was the rate of change in temperature? Group of answer choices

LaTeX: -30^\circ− 30 ∘− 30 ∘F

LaTeX: 30^\circ30 ∘30 ∘F

LaTeX: 5.5^\circ5.5 ∘5.5 ∘F

LaTeX: -2.5^\circ− 2.5 ∘F

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p. mc) knowing that it is going to rain tomorrow, and going to bed before 9 p. md) knowing that you have a test in school tomorrow, and studying thw night before