Suppose the demand for a certain brand of vacuum cleaner is given by D(P) = -p
+500, where p is the price in dollars.
100
of the price in terms of the cost, c, is expressed as p(c)=2c-16, find an expression for D(c)the demand in terms of the
cost
De) = O
(Use integers or fractions for any numbers in the expression.)
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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