Solve for the variable.-7x = -63
A. 56
B. -56
C. 9
D. 2
Answer: C
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Find the equation of the parabola determined by the given information.Focus at (4, 0), directrix x = -4
A. 16y = x2
B. y2 = 16x
C. y = 
x2
D. x = 
y2
Evaluate or simplify the expression without using a calculator.ln 1
A. -1 B. 1 C. e D. 0
Multiply.
? 
A. 
B. 1
C. 
D. 
A dietitian arranges a special diet using three foods, A, B, and C. The table shows the number of units of calcium, iron, Vitamin A, and cholesterol in each ounce of food. Food Calcium Iron Vit. A Cholesterol A 20 10 10 20 B 10 10 20 24 C 10 10 10 18 If the minimum daily requirements are 400 units of calcium, 240 units of iron, and 280 units of vitamin A, find how many ounces of each food should be used to meet the minimum daily requirements and at the same time minimize cholesterol intake?
What will be an ideal response?