6. Sai is ordering new shelving units for his store. Each unit is 7 feet in length and extends from floor to ceiling. Sai’s store has 119 feet of wall space that includes 21 feet of windows along the walls. If the shelving units cannot be placed in front of the windows, which of the following inequalities includes all possible values of r, the number of shelving units that Sai could use?
7.
The scatterplot above shows the weight, in ounces, of the fruits on a certain truffula tree from days 55 to 85 after flowering. According to the line of best fit in the scatterplot above, which of the following is the closest approximation of the number of days after flowering of a truffula fruit that weighs 5.75 ounces?
A. 63
B. 65
C. 77
D. 81
8. Hannah placed an online order for shirts that cost $24.50 per shirt. A tax of 7% is added to the cost of the shirts, before a flat, untaxed shipping rate of $6 is charged. Which of the following represents Hannah’s total cost for s shirts, in dollars?
A. 0.07(24.50s + 6)
B. 1.07(24.50 + 6)s
C. 1.07(24.50s) + 6
D. 1.07(24.50 + s) + 6
9. Once a certain plant begins to grow, its height increases at a linear rate. After six weeks, the plant is 54 centimeters tall. Which of the following functions best models the relationship between h(w), the height, in centimeters, of the plant, and w, the number of weeks that the plant has been growing?
A. h(w) = 6w
B. h(w) = 9w
C. h(w) = 54w
D. h(w) = 54 + w
10. Which of the following is equivalent to (12x² + 4x + 5y) + (3x² – 2x + 3y) ?
A. 2x² – 2x + 8y
B. 2x² + 15x + 8y
C. 15x² – 2x + 8y
D. 15x² + 2x + 8y
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