How do I do this problem?

Broderick had $420 I'm his checking account.he made 6 deposits of $35.50 each.he needs to write 4 checks for $310.75 each.

zloy xaker [14]

420+35.50x-310.75y=z im really not 100 precent sure

6 0

3 years ago

Suppose customers in a hardware store are willing to buy N(p) boxes of nails at p dollars per box, as given by the following fun

Viktor [21]

Answer:

(a) - 25 boxes per dollar

(b) - 20 boxes per dollar

Step-by-step explanation:

Given that,

Consumer's willing to buy boxes of nails at p dollars per box:

N(p) = 80 - 5p^{2}

(a) Change in price from $2 to $3.

N(2) = 80 - 5(2)^{2}

= 80 - 20

= 60

N(3) = 80 - 5(3)^{2}

= 80 - 45

= 35

Therefore, the average rate of change of demand is

= [N(3) - N(2)] ÷ (3 - 2)

= 35 - 60

= - 25 boxes per dollar.

(b) N(p) = 80 - 5p^{2}

Now, differentiating the above function with respect to p,

N'(p) = -10p

Therefore, the instantaneous rate of change of demand when the price is $2 is calculated as follows:

N'(p) = -10p

N'(2) = -10 × 2

= -20 boxes per dollar

7 0

3 years ago

A questionnaire was sent to 34,000 randomly chosen individuals living in USA asking about their current and past smoking habits.

kherson [118]

Answer:

The targeted population is USA residents who died of heart disease.

Step-by-step explanation:

According to this case, "the death rates due to heart disease among the smokers and nonsmokers are compared to see if smoking causes heart disease." This implies that the study targets those USA residents who died of heart disease to find out if the cause of death can be traced to heart disease caused by smoking or not. The main concentration for the study defines the targeted population. It is this group of residents who died of heart disease that is the population of interest. This means that the targeted population is a certain group of the population that share similar characteristics, especially death resulting from heart disease caused by smoking.

3 0

4 years ago

Solve for u. Enter your answer in the answer box and then click Check Answer.

Lunna [17]

Given that: