Determine the area under the standard normal curve that lies to the left of (a) upper z equals negative 1.45 commaz=−1.45, (b) upper z equals 0.63z=0.63, (c) upper z equals 1.48z=1.48, and(d) upper z equals negative 1.37z=−1.37. click the icon to view a table of areas under the normal curve. (a) the area to the left of zequals=negative 1.45−1.45 is nothing. (round to four decimal places as needed.)

The monthly texting plan of all star cell is $11 per month and $0.25 per text. the monthly texting plan of top line cell is $14 per month and $0.15 per text. a student wants to set up a system of equations to find the number of texts for which the total monthly cost of the two companies is the same. he uses the variables x and y. he lets y represent the total monthly cost. what will x represent? x = number of texts x = cost of the total number of texts x = total monthly cost x = cost of each text