A car with good tire tread can stop in less distance than a car with poor tread. The formula for the stopping distance d, in feet, of a car with good tread on dry cement is approximated by d = 0.04v2 + 0.5v, where v is the speed of the car. If the driver must be able to stop within 56 ft, what is the maximum safe speed, to the nearest mile per hour, of the car?mph A model rocket is launched with an initial velocity of 220 ft/s. The height, h, in feet, of the rocket t seconds after the launch is given by h = −16t2 + 220t. How many seconds after launch will the rocket be 700 ft above the ground? Round to the nearest hundredth of a second. s (smaller value) s (larger value)
Equations and Inequations
Equations and inequalities describe the relationship between two mathematical expressions.
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A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
A car with good tire tread can stop in less distance than a car with poor tread. The formula for the stopping distance d, in feet, of a car with good tread on dry cement is approximated by
where v is the speed of the car. If the driver must be able to stop within 56 ft, what is the maximum safe speed, to the nearest mile per hour, of the car?
mph
A model rocket is launched with an initial velocity of 220 ft/s. The height, h, in feet, of the rocket t seconds after the launch is given by
How many seconds after launch will the rocket be 700 ft above the ground? Round to the nearest hundredth of a second.
| s (smaller value) |
|
s (larger value) |
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