A mobile phone costs £5 per mon plus per minute for calls Show that 150 minutes of calls costs £11

b) Write down a formula for the monthly cost. C. form minutes of phone calls.

c) A phone bill is £9.80
How many minutes of calls were made​

c

step-by-step explanation:

think the answer would beb

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.