At sunrise, the temperature was –4.5°c. during the day, the temperature rose 9.7°c and then fell 4.8°c.
what was the final temperature?
a.
–19°c
b.
0.4°c
c.
10°c
d.
9.4°c
i think it's 9.4, but i'm not sure. i used to be pretty good at these questions, but i'm kinda rusty, so give an easy to understand explanation!

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

In the rectangle below ac=30 units what is de

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a. the profit when the unit price is equal to 0b. the unit price(s) when the profit is equal to 0c. the profit when the unit price is greatestd. the unit price(s) when profit is greatest