Suppose the marginal costs of exercising are constant and the marginal benefits of exercising decline over time. With marginal costs and benefits placed on the vertical axis and time placed on the horizontal axis, the resulting marginal cost curve would be a line and the resulting marginal benefit curve would be .

The economic advisor of a large tire store proposes the demand function d(p)equalsstartfraction 1900 over p minus 40 endfraction , where d(p) is the number of tires of one brand and size that can be sold in one day at price p. answer parts (a) through (e) below. a. recalling that the demand must be positive, what is the domain of this function? the domain consists of all possible values of ▼ for which ▼ p d(p) ▼ does not exist. is positive. is zero. is negative. exists.

Kyle and alyssa paid $1,000 and $4,000 in qualifying expenses for their two daughters jane and jill, respectively, to attend the university of california. jane is a sophomore and jill is a freshman. kyle and alyssa's agi is $135,000 and they file a joint return. what is their allowable american opportunity tax credit after the credit phase-out based on agi is taken into account?

Tara and her parents want to save at least $40,000 for college in 8 years. which statement describes the most effective savings plan for tara and her parents to meet their goal? tara and her parents should make deposits of $300 every month into a college savings account. tara and her parents should make deposits of $450 every month into a college savings account. tara and her parents should make deposits of $3,000 every year into a college savings account. tara and her parents should make deposits of $4,000 every year into a college savings account