Find the standard form of the equation of the parabola.Vertex at the origin, opens upward, focal width = 10
A. y2 = 2.5x
B. y2 = 10x
C. x2 = 10y
D. x2 = -10y
Answer: C
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Show that the equation is not an identity by listing the value(s) of the variable from among 0, 
, 
, and - 
for which the equation is false.(tan ? + 1)2 = sec2 ?
A. 
and 0
B. 
and - 
C. 
, 
, and 0
D. 
, 
, and - 
Solve.An omelette costs $1.00 more than Mario's order of pancakes. After treating his family to breakfast, Mario is sure that 6 omelettes and 3 orders of pancakes cost more than $25 but not more than $40, including tax of 7% and a tip of $3.50. In what price range is an order of pancakes?
A. ($1.57, $3.12] B. [$1.54, $3.10] C. ($1.54, $3.10] D. ($1.57, $3.12)
Solve the problem. Write ratios in lowest terms.A certain lake is 1300 feet deep. A nearby lake is 1000 feet deep. Write the ratio of the first lake's depth to the second lake's depth.
A. 
B. 
C. 
D. 
Solve the problem.If a polygon, of n sides has 
n(n - 3) diagonals, how many sides will a polygon with 230 diagonals have?
A. 23 sides B. 25 sides C. 22 sides D. 24 sides