The function y = -15x + 2100 can be used to model the height, y, of a parachute jumper x seconds after she jumps from an airplan
1 answer:
Answer:
2100 units
Step-by-step explanation:
We want to find the y-intercept of the function which can be used to model the height, y, of a parachute jumper x seconds after she jumps from an airplane.
To find the y-intercept, you substitute into the equation.
Multiply by zero to get:
Add zero to obtain:
'
Therefore the y-intercept, which is the initial height is 2100
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Where:
From the problem we know that:
Lets replace those values in our equation to find
We can conclude that after 1600 years of radioactive decay, the mass of the 100-gram sample will be 91.7 grams.