Acomputer can perform 4.5×〖10〗^2 instructions in a second. which expression shows how long it would take to perform 1.8×〖10〗^10 instructions? 4×〖10〗^5 seconds 4×〖10〗^7 seconds 4×〖10〗^8 seconds 8.1×〖10〗^12 seconds

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

Heather is a cashier. she can ring up 1212 customers in 99 minutes. at this rate, how many minutes does it take her to ring up 44 customers?

Julie multiplies 6.27 by 7 and claims the product is 438.9 .explain without multiplying how you know juliesanswer is not correct.find the correct answer