Solve the problem.Anne and Nancy use a metal alloy that is 23% copper to make jewelry. How many ounces of a 20% alloy must be mixed with a 25% alloy to form 130 ounces of the desired alloy?
A. 52 ounces
B. 54 ounces
C. 83 ounces
D. 78 ounces
Answer: A
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Solve.A $320 lamp is on sale at 45% off. What is the discount?
A. $176.00 B. $144.00 C. $14.40 D. $305.60
Solve using the square root property.2k2 = 50
A. ± 
B. ±5
C. 625
D. ± 
The volume of paint in a right cylindrical can is given by 
, where t is time in seconds and V is the volume in cm3. How fast is the level rising when the height is 3 cm? The can has a height of 5 cm and a radius of 3 cm. [Hint: To get h as a function of t, first solve the volume 
for h.] Round
your answer to the nearest whole number.
?
A. 
B. 
C. 
D. 
E. 
Graph the parabola and give its vertex, axis, x-intercepts, and y-intercepts.f(x) = -7x2 - 2x - 9
A. vertex 
; axis is x = 
;
no x-intercepts; y-intercept is -9
B. vertex 
; axis is x = - 
;
no x-intercepts; y-intercept is 9
C. vertex 
; axis is x = 
;
no x-intercepts; y-intercept is 9
D. vertex 
; axis is x = - 
;
no x-intercepts; y-intercept is -9