Which of the equations listed below are linear equations?

1: c= 2pir
2: a= pir^2
3: v= 4/3pir^3

a equation 1 only
b equation 2 only
c equations 1 and 3

1.

Step-by-step explanation:

We know that a linear equation is a particular type of equation .

The given equations :

Here , variable = r (radius)

Since , the variable has exponent =1 , therefore it is a linear equation.

Here , variable = r (radius)

Since , the variable has exponent =2 , therefore it is not a linear equation.

Here , variable = r (radius)

Since , the variable has exponent =3 , therefore it is not a linear equation.

Hence , the correct answer is .

120 seems like the most sensible answer.

step-by-step explanation:

if there is only one topping on all caramel apples and there's 120 of them. then all apples should/will be covered in sprinkles. make sense?

(a) {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …}

(b) $59 398

step-by-step explanation:

(a) the annual sequence of profits

aₙ = a₁rⁿ⁻¹

the model for the sequence of profits is {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …} .

(b) profit after 15 yr

  a₁ = $ 30 000

  r = 1.05

a₁₅ = 30 000 × 1.05¹⁴

a₁₅ = 30 000 × 1.979 93

a₁₅ = $59 398

the profit in year 15 will be $59 398.