Find the cross-product and determine whether the proportion is true or false.
= 
A. 200.75 = 134.75; true
B. 202.125 = 202.125; true
C. 134.75 ? 303.1875; false
D. 202.125 ? 202.125; false
Answer: B
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Decide whether the statement makes sense. Explain your reasoning.I found a rock at the bottom of our swimming pool. It had a mass of 500 grams and a volume of 1000 cubic centimeters, so its density was 0.5 g/cm3.
What will be an ideal response?
Decide whether the given set of numbers is a group under the given operation.Natural numbers; subtraction
A. Yes B. No
Write an expression to state the problem and simplify.An investor buys 90 shares of stock for d dollars per share. The next day two other investors each buy the same number of shares, but the price has risen by $5 per share. How much have the three investors spent?
A. 90d + 90(d + 5); 180d + 450 dollars B. 90d + 2 ? 90d + 10; 270d + 10 dollars C. 90d + 2 ? 90(d + 5); 270d + 900 dollars D. Cannot be solved
Determine the slope and the y-intercept. Use the slope and the y-intercept to graph the equation.y = 
x + 5
A. slope: - 
; y-intercept: (0, 5)
B. slope: 
; y-intercept: (0, -5)
C. slope: 2; y-intercept: (0, -5)
D. slope: 
; y-intercept: (0, 5)