Collect like terms.
x + 
y - 
x - 
y + 2
A. 
x + 
y + 2
B. 
x + 
y + 2
C. 
x + 
y + 2
D. 
x + 
y + 2
Answer: D
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Solve the problems.A cheetah can run at a speed of approximately 69 miles per hour. Calculate this speed in feet per second. Round to the nearest whole number.
A. 112 ft./sec. B. 101 ft./sec. C. 138 ft./sec. D. 93 ft./sec.
Solve the problem. Be sure to make a diagram of the situation with all the given information labeled. ? The two equal sides of an isosceles triangle are each 44 centimeters. If the base measures 30 centimeters, find the height and the measure of the two equal angles. Round your answers to the whole numbers. ?
A. The height is 42 cm; the angles are 70°. B. The height is 44 cm; the angles are 72°. C. The height is 41 cm; the angles are 70°. D. The height is 39 cm; the angles are 70°. E. The height is 41 cm; the angles are 72°.
Solve the equation.16x2 - 7x + 1 = 0
A. 
± i
B. 
± 
C. - 
± i
D. - 
± 
Solve the problem.If $4500 is invested in an account that pays interest compounded continuously, how long will it take to grow to $13,500 at 7%?
A. 10.0 yr B. 17.3 yr C. 15.7 yr D. 7.7 yr