b = 2.35 + 0.25x
c = 1.75 + 0.40x
In the equations above, b and c represent the price per pound, in dollars, of beef and chicken, respectively, x weeks after July 1 during last summer. What was the price per pound of beef when it was equal to the price per pound of chicken?
A line in the xy-plane passes through the origin and has a slope of 1/7. Which of the following points lies on the line?
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If (ax + 2)(bx + 7) = 15x2 + cx + 14 for all values of x, and a + b = 8, what are the two possible values for c?
A summer camp counselor wants to find a length, x, in feet, across a lake as represented in the sketch above. The lengths represented by AB, EB, BD, and CD on the sketch were determined to be 1800 feet, 1400 feet, 700 feet, and 800 feet, respectively.
Segments AC and DE intersect at B, and ∠AEB and ∠CDB have the same measure. What is the value of x?
x + y = -9
x + 2y = -25
According to the system of equations above, what is the value of x?
In a right triangle, one angle measures x °, where sin x ° = 4/5. What is cos (90° − x°)?
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