func sajariMultiPredict(tv, radio float64) float64 {
	return 0.55*tv + 0.35*radio + 0.05
}
sajariMultiPredict makes a prediction for sales
based on the sajari multiple regression model.
package main
import (
	"encoding/csv"
	"fmt"
	"log"
	"math"
	"os"
	"strconv"
)
func scratchPredict(tv float64) float64 {
	return 0.55*tv + 0.23
}
func sajariSinglePredict(tv float64) float64 {
	return 0.57*tv + 0.22
}