Suppose that y varies inversely with x. Given x=-3 when y=-105. Find y when x=15

21

Step-by-step explanation:

It is given that y varies inversely with x.

      ...(i)

where, k is constant of proportionality.

It is given that x=-3 when y=-105. Substitute these values in equation (i), to find the value of k.

Now,

Substitute x=15 in the above equation.

Therefore, the value of y is 21 when x=15.

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

what graph

step-by-step explanation: