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What math levels does Goblins cover?

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What grade level is A1.17.a taught?

This standard is part of the A1 curriculum in Alabama Mathematics Standards.

Are there practice problems for A1.17.a?

Yes, there are 3 practice problems available for A1.17.a with worked examples.

What learning resources are available for A1.17.a?

There are 3 Khan Academy resources available for A1.17.a, including 2 videos, 1 exercises.

A1.17.a: Use arithmetic operations to combine different types of standard functions to write and evaluate functions.

Use arithmetic operations to combine different types of standard functions to write and evaluate functions.

Example Problems

A charity receives online donations

O(t) = 3000 (1.04)^t

dollars and in‑person donations

L(t) = 1500 (1.02)^t

dollars t quarters after a campaign launches.
Let

C

be the campaign's cumulative donations t quarters after launch.
Write a formula for

C(t)

.

An online ad campaign's click‑through rate

C(t) = 0.06 e^{-0.02 t}

and the number of impressions

L(t) = 80,000 e^{0.01 t}

t

days after launch.
Let

K

be the expected number of clicks t days after launch.
Write a formula for

K(t)

.

A water tank is being filled by two pumps. Pump 1 adds water at

V_1(t) = 18 t

liters, and Pump 2 at

V_2(t) = 12 t

liters after

t

minutes.
Let T be the total volume of water pumped into the tank after

t

minutes.
Write a formula for

T(t)

.

Khan Academy Resources

Model with function combination Modeling with function combination Function notation word problem: bank

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