PLZ HURRY IT'S URGENT!!! 20 POINTS!!
1. Write an equivalent expression for −4(3x−2y−1).
−12x−2y−1
−12x+8y+4
−12x−8y−4
−12x+8y−4
2. A triangle has lengths measuring 42‾√ cm, 218‾‾‾√ cm, 48‾√ cm. What is its perimeter? Express your answer in simplest terms.
options:
182‾√ cm
1028‾‾‾√ cm
122‾√+218‾‾‾√ cm
102‾√+48‾√ cm
3. The formula for the area of a trapezoid is A=12h(b1+b2).
Solve the formula for b1.
options:
A/2h−b2=b1
2/Ah−b2=b1
2A−2b2/h=b1
2A/hb2=b1
4. Gemma earns $575 a week plus $180 commission for each car she sells. She earned $1835 last week. How many cars did she sell?
options:
She sold 6 cars.
She sold 7 cars.
She sold 8 cars.
She sold 9 cars.
5. For the function f(x) = 12 – 5x, evaluate f(–3).
options:
27
-3
-27
3
6. Which of these is NOT a way to describe the slope of a line?
options:
rise over run
run over rise
the steepness of a line
the rate of change